CN103032266A - Fan linkage pitch system - Google Patents
Fan linkage pitch system Download PDFInfo
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- CN103032266A CN103032266A CN2012105877114A CN201210587711A CN103032266A CN 103032266 A CN103032266 A CN 103032266A CN 2012105877114 A CN2012105877114 A CN 2012105877114A CN 201210587711 A CN201210587711 A CN 201210587711A CN 103032266 A CN103032266 A CN 103032266A
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- interlock
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- wheel hub
- pitching
- wire ropes
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
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Abstract
The invention relates to a fan linkage pitch system, which is applied to the manual and power-driven linkage pitching for a fan. The fan linkage pitch system comprises a blade group and a pitch system which is connected with a machine head hub, and has the advantages of simple structure, low cost, excellent stability and high linkage precision. A main control system signal of the fan is used for instructing a power-driven tension system to control a blade pitching angle, and the active pitching of a blade is realized; and by the adoption of the multi-free-degree rotation of a joint bearing, the highly precise coordination of the waist hole of a linkage disc and the outer circle of the joint bearing, and the movement capability of the joint bearing in the waist hole, the high synchronization among blades of an impeller during the pitching of blades is achieved, and the problem that non-synchronization of pitching caused by non-uniform pitching force of the blades due to wind shearing, down-wind tower shadow effect and the like is solved. According to synchronized pitching and timely active pitching, the operation stability of a set is effectively improved, electricity generation is improved, the service life of the set is prolonged, and the operation safety of the set is guaranteed.
Description
Technical field
Patent of the present invention relates to a kind of blower fan interlock pitch-controlled system, i.e. the electric linkage system that manually reaches of wind-driven generator.
Background technique
Wind energy is that China and countries in the world reach one of main new energy that develop in the future at present as renewable, the environmental protection energy.Because natural wind speed, wind direction is unstable and the special operation condition such as storm wind, need control blower fan.For the utilization ratio that improves wind energy reaches under special operation condition blower fan is carried out protection.
All parts of the pitch-controlled system of wind-driven generator (hereinafter to be referred as blower fan) all are installed on the wheel hub.All parts all rotated with certain speed with wheel hub when blower fan normally moved.Pitch-controlled system is controlled the rotating speed of wind wheel by the angle of control blade, and then controls the output power of blower fan, and can make by the mode of aerodynamic braking the blower fan dead halt.The blade of blower fan (root) links to each other with wheel hub by pitch variable bearings, and each blade will have the change oar drive system of the relatively independent electric control synchronous of oneself.Become the oar drive system by a small gear and pitch variable bearings internal tooth engagement interlock.The blower fan normal operation period, when wind speed surpasses the unit rated wind speed (wind speed at 12m/s between the 25m/s time), export the change propeller angle for power ratio control and be limited to 0 degree to (becoming propeller angle adjusts automatically according to the variation of wind speed) between 30 degree, make the rotating speed maintenance of wind wheel constant by the angle of controlling blade.The shutdown that any situation causes all can make blade feathering to 90 degree position (the spacing position of blade meeting feathering to 91 degree when carrying out the emergency feathering order).
Pitch-controlled system need to become oar operation (lost efficacy such as the primary power supply power supply of pitch-controlled system after) by reserve battery power supply sometimes, so pitch-controlled system must be equipped with reserve battery with can dead halt (the spacing position of blade feathering to 91 degree) in the situation of guaranteeing unit generation catastrophe failure or major accident.Need in addition a redundant limit switch (it is spacing to be used for 95 degree), when main limit switch (it is spacing to be used for 91 degree) inefficacy, guarantee to become the safety brake of oar motor.
Each becomes the oar drive system and is furnished with the anti-drive end (motor afterbody) that an absolute value encoder is installed in motor, the absolute value encoder of also being furnished with a redundancy is installed in by the root of blade pitch variable bearings internal tooth, and it becomes propeller angle by a small gear and pitch variable bearings internal tooth engagement interlock record.The blower fan master control receives the signal of all encoders, and the signal of a pitch-controlled system application of motor afterbody encoder, only has when motor afterbody encoder lost efficacy the blower fan master control just can control the signal that pitch-controlled system is used REDUNDANCY ENCODER.
Generally adopt electronic active to become the slurry control technique for mutliblade big-and-middle-sized wind-driven generator, adjust in real time the slurry elongation of blade to change attack angle of blade, acquisition best power and control feathering come the stoppage protection unit.These structures are essentially in impeller hub and become the oar drive motor for every blade disposes separately, by variable blade control system vane propeller-changing are controlled.Several change oar drive systems of this kind structure are installed in the head wheel hub, and the increase of head wheel hub volume, head position weight are increased the weight of, and the rotary inertia of impeller increases, and control system is complicated, and the maintaining cost is high.Centering small-sized fan particularly, electronic change slurry is complicated apart from control system mechanism, and its manufacturing, installation difficulty are large, and fault is many, and relative cost is higher.
And general employing of small-sized wind power generator decided pitch blade stall control technique, driftage control technique, owing to be subjected to the severse weather environmetal impact, there are the shortcomings such as generated output control is unstable, generating efficiency is low, Security is relatively poor, fan life is short, even middle-size and small-size blower fan adopts interlock to become the oar control technique, the general gear-linked that adopts, this complex structure, precision are not high.
Summary of the invention
In order to solve the deficiency of above-mentioned technology, the object of the present invention is to provide the interlock of a kind of blower fan to become the slurry system, simple with implementation structure, cost is low, manually becoming with the wind-driven generator of electric linkage of good stability starched linked system.
In order to achieve the above object, the designed a kind of blower fan interlock of the present invention becomes the slurry system, and the manual and electric linkage that is used for blower fan becomes slurry, comprise vane group and the change slurry system that is connected with the head wheel hub, described change slurry system comprises that manual change slurry and electronic change starch, wherein
Described vane group is to be installed on the head wheel hub by crossing the blade rotor bearing with the blade pass of blade root rotating shaft more than two, each blade root shaft centerline intersects at head wheel hub center line, the root of blade root rotating shaft connects gravity rod, and gravity rod connects the formation linking mechanism by joint shaft bearing with the interlock dish that is evenly equipped with the waist hole;
Described manual change slurry is that the interlock dish is installed on the head wheel hub by the centre bearing connection, the interlock dish can be rotated around the wheel hub center line, become the oar sense of rotation at it on this interlock dish the installation through hole is arranged, pass through bearing pin, Regulation spring, spring cup and setscrew nut are connected on the head wheel hub, come the compression adjustment spring to specified value by setscrew nut position on the adjustment bearing pin, thereby reach the required value that overcomes of blade initial start change oar is set, the vane group interlock namely is set becomes oar initial balance power, caging bolt is installed on the head wheel hub and withstands the interlock dish, rotates the initial established angle that initial position is controlled each blade thereby control the interlock dish by the length of regulating caging bolt;
Automatically become oar in order to control blade, described electric variable pitch is fixed on the head wheel hub by extension spring by cooperation via hole one end of the flexible wire ropes that is fixed with aluminum alloy compacting joint thereon by the interlock dish, and the other end is connected on the electronic tensioning system that is fixed on the generator by the hollow generator shaft that the flexible wire ropes guide pin bushing passes on the generator in the lump.
Relative movement by wire rope and steel wire loop realizes that any transfer of mechanism kinematic direction and angle reaches rational position and drives the purpose that control becomes the oar motion, its critical piece is the flexible wire ropes guide pin bushing, flexible wire ropes, aluminum alloy compacting joint, the extension spring that the tensioning wire rope is used and be installed on the electronic tensioning system of fan motor rear side, it is simple in structure, lightweight, reliable in action, easy to adjust, cost is low.
On the such scheme basis, described head wheel hub is provided with damper, and impact force when coming buffering blade to become behind the oar backhaul of interlock dish makes backhaul steady.
By said structure, make multiblade wind wheel system energy Complete Synchronization when vane propeller-changing, thereby solve the problems such as the asynchronous vibration that causes of vane propeller-changing, noise.
Described joint shaft bearing is the ball bearing of multi-freedom degree rotation, cooperates with the waist hole of interlock dish, and this joint shaft bearing outer ring can reach up and down interlock disc radial direction and move in the interlock dish, reach each blade around blade root rotating shaft rotational synchronization, makes the multiple-blade interlock flexibly.
When producing vibration, the centrifugal force when described extension spring tensioning flexible wire ropes makes itself and aluminum alloy compacting joint with vane rotary and unit operation do not cooperate via hole to contact with the interlock dish.
When described flexible wire ropes guide pin bushing and flexible wire ropes generation relevant action, any relative movement does not occur with hollow generator shaft in the flexible wire ropes guide pin bushing, flexible wire ropes not with the axial motion that relatively rotates of hollow generator shaft.
Superiority of the present invention is, and is simple in structure, cost is low, good stability, and the interlock precision is high, comes the electronic tensioning system control of instruction blade to become the blade angle degree by blower fan master control system signal, thereby realizes that blade initiatively becomes slurry; Utilize the multi-freedom degree rotation of joint shaft bearing and interlock dish waist hole cooperates with the highi degree of accuracy of the outer ring of joint shaft bearing and the movement of joint shaft bearing in the waist hole slot reaches the synchronism that reaches height between each blade of impeller when vane propeller-changing, solved the asynchronous problem of change oar that the vane propeller-changing power inequality that causes because of wind shear, lower wind direction tower shadow effect etc. causes that reaches.Become the synchronous and proper and initiative change oar of oar, the stability of Effective Raise unit operation improves generated energy, prolongs the unit operation life-span, ensures unit operation safety.
Description of drawings
Fig. 1 is that the present invention is used in the general illustration on the wind power generating set
Fig. 2 is that linking mechanism of the present invention is always schemed
Fig. 3 is blade root rotating shaft of the present invention and gravity rod structural drawing
Fig. 4 is linkage structure schematic representation of the present invention
Fig. 5 adds bearing figure in the middle of the interlock dish of the present invention
Fig. 6 is that flexible wire ropes of the present invention and flexible wire ropes guide pin bushing are installed detailed drawing
Number in the figure:
The 1--cabin; The electronic tensioning system of 2--; The 3--generator set;
The hollow generator shaft of 4--; The 5--air guide sleeve;
The 6--blade; The 61--blade rotor; The 7--pull bar;
The 8--extension spring; The 9--flexible wire ropes; 10--interlock dish;
11--aluminum alloy compacting joint; 12--flexible wire ropes guide pin bushing;
13--head wheel hub;
14-caging bolt; 15--becomes the slurry Regulation spring; The 16--buffer;
The 17--spring cup; 18-setscrew nut; The 19--centre bearing;
The 20--fastening; The 21--gravity rod; The 22--joint shaft bearing;
The 23--spindle nut; The 24--bearing; 25--axle snap ring;
The 26--mounting rod; The 27--nut.
Embodiment
Be that the present invention is used in shown in the general illustration on the wind power generating set such as Fig. 1, a kind of blower fan is comprised of cabin 1, electronic tensioning system 2, generator set 3, hollow generator shaft 4 and air guide sleeve 5.Shown in Fig. 2 to 6, the interlock of a kind of blower fan becomes the slurry system, be used for blower fan manually and electric linkage become slurry, the change slurry system that comprises vane group and is connected with head wheel hub 13, described change slurry system comprises that manual change is starched and electronic change is starched, wherein,
Described vane group is to be installed on head wheel hub 13 by the blade 6 with blade root rotating shaft 61 more than two by blade rotor bearing 24), each blade root shaft centerline intersects at head wheel hub center line, the root of blade root rotating shaft 61 is connected by profile and gravity rod 21, each gravity rod 21 connects the formation linking mechanism by its upper joint bearing 22 with the interlock dish 10 that is evenly equipped with the waist hole, each gravity rod 21 cooperates with waist hole on the interlock dish 10 by joint shaft bearing 22, and joint shaft bearing 22 can reach up and down waist hole length direction and move in 10 waist holes are coiled in interlock.
Described manual change slurry is that interlock dish 10 is installed on the head wheel hub 13 by centre bearing 19 connections, become the oar sense of rotation at it on this interlock dish 10 the installation through hole is arranged, pass through bearing pin, Regulation spring 15, reaching spring cup 17 and setscrew nut 18 is connected on the head wheel hub 13, setscrew nut 18 comes compression adjustment spring 15 to specified value on the bearing pin by adjusting, the vane group interlock namely is set becomes oar initial balance power, one caging bolt 14 is installed on the head wheel hub 13 and withstands interlock dish 10, rotates the initial established angle that initial position is controlled each blade 6 thereby control interlock dish 10 by the length of regulating caging bolt 14;
Described electric variable pitch composition is fixed on the head wheel hub 13 by extension spring 8 by cooperation via hole one end of the flexible wire ropes 9 that is fixed with aluminum alloy compacting joint 11 thereon by interlock dish 10, and the other end is connected on the electronic tensioning system 2 that is fixed on the generator by the hollow generator shaft 4 that flexible wire ropes guide pin bushing 12 passes on the generator 3 in the lump.
Working principle of the present invention is as follows:
Blade 6 can produce the moment around its blade root rotating shaft under the active forces such as aerodynamic loading and blade deadweight, this moment is relevant with leaf weight, position of centre of gravity, wheel speed, wind speed, wind direction etc.Under this moment loading, blade can be around its blade root rotating shaft rotation, as shown in Figure 4, each blade is consistent around its blade root rotating shaft sense of rotation, drive gravity rod 21 around blade root rotating shaft radial rotary, be installed on gravity rod 21 upper joint bearings 22 and will produce with respect to interlock and coil 10 waist hole axial motions, blade 6 will drive the centre bearing 19 of interlock dish 10, the i.e. rotation of vane rotary center line around the rotation of its blade root rotating shaft 61.This structure guarantees the sound synchronism that multiple-blade rotates.
For making vane propeller-changing reach designing requirement, the output of impeller power stability need to be set and be connected after when blade angle, blade were become oar and become oar: as shown in Figure 2: coil 10 pin-and-holes by bulb and the interlock of pull bar 7 and be connected, connect by change oar Regulation spring 15 and associated components spring cup 17, nut 18 with head wheel hub 13.Adjust by the position of adjusting nut 18 on pull bar 17 and to become oar Regulation spring 15 decrements and reach and set blade and initially become paddle balance moment.Power was steadily exported after the spring rate that becomes oar spring 15 by design reached vane propeller-changing.Adjust interlock dish 10 rotation initial positions by the holding down bolt 14 that is installed on the head wheel hub 13, to reach to adjust each blade initial settling angle purpose is set.Behind vane propeller-changing, reply and carry out buffer function by being installed on buffer 16 distich Moving plates 10 on the head wheel hub, alleviate impeller and become the impulsive load that the quick resilience of oar produces unit.
Meet needs such as the strong wind early warning maybe need be overhauled, maintenance at unit when shutting down and other operating mode needs automatically or during pseudoinstruction's electric variable pitch by its lower realization: as shown in Figure 2: flexible wire ropes guide pin bushing 12 1 ends are fixed on the head flange 13, and the other end connects with electronic tensioning system 2 on being fixed in generator 3 by hollow generator shaft 4 on the generator 3.Flexible wire ropes 9 one ends are fixed on the head wheel hub 13 by extension spring 8, coil 10 relevant interface holes by guide element on the head wheel hub by interlock and then pass flexible wire ropes guide pin bushing 12 and be fixed on the electronic tensioning system 2.Flexible wire ropes guide pin bushing 12 is positioned not on head wheel hub, blower fan main shaft and the electronic tensioning system associated components with respect to the motion of head wheel hub by fastening 20 and nut 27 etc.Aluminum alloy compacting joint 11 is fixed on flexible wire ropes 9 certain special position, and with interlock dish 10 certain interval is arranged, flexible wire ropes 9 coils 10 relevant interface via holes with interlock certain interval, flexible wire ropes 9 is by extension spring 8 tensionings, to guarantee that aluminum alloy compacting joint 11 and flexible wire ropes 9 are not coming in contact with interlock dish 10 under its centrifugal action and in the unit vibration situation in the wheel speed scope.Electronic tensioning system 2 is fixed on the generator 3, can can not rotate by relative flexibility wire rope guide pin bushing 12 by flexible wire ropes 9 when flexible wire ropes 9 relative flexibility wire rope guide pin bushings 12 move to axial, flexible wire ropes guide pin bushing 12 does not rotate relative to hollow generator shaft 4.Electronic tensioning system 2 obtains blower fan master control system signal and moves, 12 motions of pulling flexible wire ropes 9 relative flexibility wire rope guide pin bushings, promote interlock dishes 10 and rotate thereby be fixed on the flexible wire ropes 9 aluminum alloy compacting joint 11, thereby interlock dish 10 rotates to rotate by joint shaft bearing 22 band moving vane main shafts and reaches blade 6 pitch angles and change.When electronic tensioning system 2 blower fan master control system signal when recovering to return, interlock dish 10 returns by the design return speed becoming under oar spring 15 and buffer 16 effects, and stops at holding down bolt 14 spacing places, reaches the initial established angle of blade position.Becoming oar recovers to finish.
Claims (5)
1. blower fan interlock becomes the slurry system, be used for blower fan manually and electric linkage become slurry, the change slurry system that comprises vane group and is connected with head wheel hub (13) is characterized in that: described change slurry system comprises that manual change is starched and electronic change is starched, wherein,
Described vane group is by being with the blade (6) of blade root rotating shaft (61) to be installed on the head wheel hub (13) by blade rotor bearing (24) more than two, each blade root shaft centerline intersects at head wheel hub center line, the root of blade root rotating shaft (61) connects gravity rod (21), and gravity rod (21) connects the formation linking mechanism by joint shaft bearing (22) with the interlock dish (10) that is evenly equipped with the waist hole;
Described manual change slurry is that interlock dish (10) is installed on the head wheel hub (13) by centre bearing (19) connection, this interlock dish (10) is upper to have the installation through hole in its change oar sense of rotation, pass through bearing pin, Regulation spring (15), reaching spring cup (17) and setscrew nut (18) is connected on the head wheel hub (13), setscrew nut (18) comes compression adjustment spring (15) to specified value on the bearing pin by adjusting, the vane group interlock namely is set becomes oar initial balance power, it is upper and withstand interlock dish (10) that one caging bolt (14) is installed in head wheel hub (13), control interlock dish (10) by the length of regulating caging bolt (14) thus rotate the initial established angle that initial position is controlled each blade (6);
Described electric variable pitch composition is fixed on the head wheel hub (13) by extension spring (8) by cooperation via hole one end of the flexible wire ropes (9) that is fixed with aluminum alloy compacting joint (11) thereon by interlock dish (10), and the other end is connected on the electronic tensioning system (2) that is fixed on the generator by the hollow generator shaft (4) that flexible wire ropes guide pin bushing (12) passes on the generator (3) in the lump.
2. blower fan according to claim 1 interlock becomes the slurry system, and be characterised in that: described head wheel hub (13) is provided with damper (16), impact force when coming buffering blade to become behind the oar interlock dish (10) backhaul.
3. blower fan interlock according to claim 1 becomes the slurry system, be characterised in that: described joint shaft bearing is the ball bearing of multi-freedom degree rotation, cooperate with the waist hole of interlock dish (10), this joint shaft bearing outer ring can reach up and down interlock disc radial direction and move in the interlock dish, reach each blade (6) around blade root rotating shaft (61) rotational synchronization.
4. blower fan interlock according to claim 1 becomes the slurry system, is characterised in that: do not cooperate via hole to contact with the interlock dish when centrifugal force when described extension spring (8) tensioning flexible wire ropes (9) makes itself and aluminum alloy compacting joint (11) with vane rotary and unit operation produce vibration.
5. blower fan interlock according to claim 1 becomes the slurry system, be characterised in that: when relevant action occurs for described flexible wire ropes guide pin bushing (12) and flexible wire ropes (9), any relative movement does not occur with hollow generator shaft (4) in flexible wire ropes guide pin bushing (12), flexible wire ropes (9) not with hollow generator shaft (a 4) axial motion that relatively rotates.
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| CN201210587711.4A CN103032266B (en) | 2012-12-31 | 2012-12-31 | Fan linkage pitch system |
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| CN201210587711.4A CN103032266B (en) | 2012-12-31 | 2012-12-31 | Fan linkage pitch system |
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| CN103032266B CN103032266B (en) | 2015-04-01 |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103967722A (en) * | 2014-03-24 | 2014-08-06 | 南京航空航天大学 | Fixed-pitch variable-speed horizontal-axis wind turbine installation angle adjusting device for small-scale experiment |
| WO2015014523A1 (en) * | 2013-08-02 | 2015-02-05 | Voith Patent Gmbh | Turbine for a continuous-flow power plant |
| CN104712500A (en) * | 2015-03-06 | 2015-06-17 | 东北大学 | Micro-miniature horizontal-axis wind turbine attack-angle-variable mechanism |
| CN104763587A (en) * | 2015-04-27 | 2015-07-08 | 宁波锦浪新能源科技有限公司 | Novel wind turbine linked pitch alteration system |
| CN106640533A (en) * | 2016-12-30 | 2017-05-10 | 山东中车风电有限公司 | Self-adaptive variable-propeller vertical shaft wind generator driving device and wind generator |
| CN108457795A (en) * | 2018-04-26 | 2018-08-28 | 丁超 | The wind turbines rotor of automatic variable-pitch and disability protection |
| CN110030158A (en) * | 2019-05-15 | 2019-07-19 | 张国欣 | A kind of novel hydraulic-control wind-driven generator |
| CN110030156A (en) * | 2017-09-25 | 2019-07-19 | 青岛兰道尔空气动力工程有限公司 | Automatic pitch-controlled system with counter weight device |
| CN111594380A (en) * | 2020-04-03 | 2020-08-28 | 贵州电网有限责任公司 | Small-size aerogenerator aircraft nose of variable oar |
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Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2015014523A1 (en) * | 2013-08-02 | 2015-02-05 | Voith Patent Gmbh | Turbine for a continuous-flow power plant |
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| CN104763587B (en) * | 2015-04-27 | 2017-07-28 | 宁波锦浪新能源科技股份有限公司 | A kind of novel wind motor linkage pitch-controlled system |
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| CN106640533A (en) * | 2016-12-30 | 2017-05-10 | 山东中车风电有限公司 | Self-adaptive variable-propeller vertical shaft wind generator driving device and wind generator |
| CN110030156A (en) * | 2017-09-25 | 2019-07-19 | 青岛兰道尔空气动力工程有限公司 | Automatic pitch-controlled system with counter weight device |
| CN108457795A (en) * | 2018-04-26 | 2018-08-28 | 丁超 | The wind turbines rotor of automatic variable-pitch and disability protection |
| CN108457795B (en) * | 2018-04-26 | 2023-09-19 | 新乡市恒德机电有限公司 | Wind wheel of wind driven generator with automatic pitch control and disabling protection |
| CN110030158A (en) * | 2019-05-15 | 2019-07-19 | 张国欣 | A kind of novel hydraulic-control wind-driven generator |
| CN110030158B (en) * | 2019-05-15 | 2024-02-06 | 张国欣 | Novel hydraulic control wind driven generator |
| CN111594380A (en) * | 2020-04-03 | 2020-08-28 | 贵州电网有限责任公司 | Small-size aerogenerator aircraft nose of variable oar |
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